root nodule
通常由固氮细菌引起
常用释义
英式发音
美式发音
基本释义
- 根瘤：植物根部的一种小肿块，通常由固氮细菌引起，有助于植物吸收氮元素。
例句
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1·Root system is sturdy develop, give birth to root nodule closely, the errant bud on its root recovery capability is strong, can make root system spreads to horizontal way.根系粗壮发达，密生根瘤，其根上的不定芽再生能力强，能使根系向水平方向蔓延。
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2·Vicia sativa root nodule is usually rod-shaped, it is mainly composed of many cortex cells and a very large central zone which contains meristem, infected tissue and senescent tissue.箭舌豌豆根瘤为杆形，主要由皮层细胞和一个体积很大，含有分生组织、侵染组织，有时还有衰老组织的中心区域所组成。
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3·Effects on mitosis and chromosomal aberrations of tobacco root tip cells were observed by the method of artificially inducing para-nodule treated with 2, 4-d and rhizobium.通过人工诱导烟草结瘤的方法，观察给予2,4 - D、根瘤菌后，其对烟草根尖细胞有丝分裂和染色体畸变的影响。
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4·Fresh root weight and nodule number of alfalfa with lime application were higher than those of the control group.施用石灰后，紫花苜蓿的根鲜重、根瘤数、株高、鲜重、干重、分枝数都高于对照。
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5·Belonging to the legume family, it enters a complex symbiosis with soil bacteria called rhizobia, which results in the formation of a new root organ, the nodule.作为豆科植物的一员，大豆与一种被称之为根瘤菌的土壤细菌形成了复杂的共生关系，结果导致新的根器官——根瘤的形成。
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6·The effect on the root system and nodule of faba bean under different fertilizer treatments were studied with the cultivar 89-147 under farm experiment.以蚕豆品种89-147为材料，在大田条件下研究了不同施肥处理对蚕豆根系及根瘤的影响。
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7·The existence of lacustrine tufa and root-shaped nodule in Badain Jaran Desert proves that the sand dunes and lakes were formed 30 ka ago, and have remained basically unchanged.巴丹吉林沙漠湖泊中的钙华和根状结核的存在证实这些沙丘和湖泊形成的时间约3万年，而且基本上没有发生大的改变。